You need to modify the contents of a PKG installer (e.g., remove bloatware) and then repackage the modified file system as a bootable ISO.
Converting a PKG file to an ISO image is a common task for users who need to create bootable macOS installers or play backup games on legacy consoles like the PlayStation 3. Since a PKG is essentially an installation package and an ISO is a disk image, the conversion process involves extracting the contents of the PKG and then "repackaging" them into the ISO format.
For a macOS installer ISO, copy the extracted contents into a folder that mimics a bootable installer (e.g., copy Install macOS.app contents). For a simple data ISO, skip this.
| Issue | Description | |-------|-------------| | | PKG uses xar + pax / pbzx compression; ISO uses ISO 9660/UDF | | Bootability | PKG is not bootable; ISO for OS installation requires boot sectors | | Scripts | PKG contains pre/post-install scripts; ISO is static | | Ownership/permissions | PKG preserves Unix perms; ISO may lose some metadata | how to convert pkg to iso
A .pkg file is an archive used by macOS’s Installer application, containing compressed payloads and installation scripts. An .iso file is a sector-based disc image used for optical media or virtual machines. Direct conversion is ; it requires extracting the contents of the PKG, optionally making them bootable or installable, then packaging them into ISO 9660 format.
A .pkg file is essentially a package format used primarily by Sony for their PlayStation consoles (PS3, PS4, PS5, and PSP). Think of it like a .zip or .exe file. It is an archive that contains compressed data used for installing software, games, patches, or DLC onto the console’s hard drive.
: Open Terminal and use the following command to create a temporary disk image (DMG): hdiutil create -o /tmp/macOS -size 16384m -volname macOS -layout SPUD -fs HFS+J . You need to modify the contents of a PKG installer (e
Once you have a game folder, this tool can package it into a compatible .iso file.
Here is the critical truth: They are not interchangeable formats.
mkisofs -iso-level 3 -udf -full-iso9660 -volid "MY_GAME" -output game.iso ./extracted_game_folder/ For a macOS installer ISO, copy the extracted
hdiutil convert ./macOS_Installer.dmg -format UDTO -o ./macOS_Installer.iso
The success of this conversion can be "hit or miss" depending on the specific content of the package.